Shadow-clock.



PATENTED FEB. 27, 1906.

R. B. SMITH.

SHADOW CLOCK.

APPLICATION FILED uns. 1905.

No. 813,836. PATENTED FEB. 27, 1906. R. B. SMITH.

SHADOW CLOCK.

APPLICATION rum APR. s, 1905.

3 SHEETS-SHEET 2.

il v unnlullm-llllllllrm kvm No. 813,836. vPA'IENTED FEB.A27, 1906.

R. B. SMITH.

SHADOW CLOCK.

APPLICATION FILED APB. 3, 1905.

3 SHEETS-SHEET 3.

.1. vim?,

ATTRNEYS elevation, of the. hand-operating mechanism.'

.8 shows a central section through another v transparent Xork, .borougiof Manhattan, in the county 'binations hereinafter described and morefront elevation ofthe `mec anism for inter- UNITED STATES n PATENToFEioE.

Specicat'ion of Letters Patent.l

Application ined iprii 3,1905. ksapin No. 253,796.

To all wh/om it may concern.-

, Be it known that I, RICHARD BARTHoLo- MEW SMITH, a subject of the Kingof Great Britain, and a resident ofthe city of New and State of ew York,have invented a new and Improved Shadow-Clock, of which the following isa full, elear,`and exact description. i

My invention relates to clocks in which the shadow of the moving handsis vcast upon sine surface, it being especially applicable to thedisplay of advertisements.

It consists in the various features and comparticularly claimed. v

A Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures. i

Figure 1 illustrates one a plication of my invention. Fig. 2 is a centrasection through one embodiment of my improved mechanism. Fig. 3l is asection taken on the line 3 3' of Fig.2. Fig. 4 isan enlarged detail,infront Fig. 5' is a transverse section therethrough on the line 5 5 ofFig. 4. Fi 6 is a detail in mittently moving the multi le dial. Fi Y. 7is a transverse section theretiirough, and ig.

form of my invention.

In a suitable casing 10 is mounted clock mechanism A, which in Figs. 2to 7 of the drawings isy shown as com risinga goingtrain a and astriking-train Divi' ling thel casing' into two sections is a partition11, through which is an opening-containing) a panel or member '12,prefera ly of glass, at the center of which is set a spindle 13.Aboutithis spindle are rotatably mounted transparent members 14 and 15,each provided with a toothed rim 16, which meshes with gears 17 and 18upon the minute-spindle and hour-sleeve, res ectively, of thegoing-train. Carried by t e members 14and 15, they being preferablypainted upon the glass, are opaque hour and minute hands 19.

Mounted in the partition 1 1 and projecting from one side thereof is a sindle 20, upon which may rotate. a whee or supporting `transparentmembers an `havin member 21, having a circular series of openings inwhich are set transparent dials 22,. About each of these dials is aseries of charac- Patented Feb. 2'7, 1906.

ters 23, each corresponding in position and? number to the hour-numeralsof the ordinary clock and preferably forming different combinationsofwords constituting advertising matten` Upon each dial, between thehour characters, may be located the usual minutedivisions, while withinthese circumferential characters may be placed appropriate advertisingphrases. A pinion 24 of the' strikingtrain engages teeth upon the rim ofthe wheel 21, and rotating with the train is included anotchedlocking-plate 25 and the usual ily 26, having projecting from italocking-pin 427.. Fulcrumed adjacent to this portion of thestriking-train is a locking-lever 28, having projections 29 and 30,which may'r respectively engage the notch in the plate 25 and `the pin27. With the opposite extremity of the ocking-lever coperates a lever31, movable in a plane substantially at right angles tothe plane ofmovement of the locking-lever and having 'a fork which receives theouter extremity of an operating-lever 32. The inner endA of thisoperating-lever may contact with a series of pins situated about theperiphery of a gear 33 of the strikingtrain. he springs of the going andstriking trains being Wound, the hands are advanced over the dial, whichis in registration with the opening through the partition 11 to indicatethe time in the usual manner.v At predetermined'intervals, d,e endingupon the spacing of the ins upont e gear 33, the strikingtrain wi l bereleased through the movement ,of the lever system, securing anautomatic has just been described means are provided for casting ashadow of the hands and dial .characters upon a screen or other surface.

For this purpose I have shown a source of light consisting of anincandescent lamp 34, situated within the casin at one side of thebetween it and said members a condensingens 35. alinement with the lamp,lens and transparent members extending from an opening in the'side ofthe casing is a tube 36, containing In-A IOO

a suitable projecting lens or vsystem V37. The

' circuit being closed, the light from the incanous displa d rzo descentlamp passes through the lens 35 and the transparent members 14 and 15and the articular dial which is opposite these memliers and is thrown bythe lens 37 upon the receiving-surface in a luminous circle. The o aquehands, dial characters, and inscriptlon cutoff the light-rays, causing ashadow of these elements to be cast Within the circle. It should, benoted that the transparent hand and dial members, together with the lampand lenses, are all at one side of the opa ue elements of the clockmechanism, so t at there is nothing to break the sliadow \to be cast.This not only furnishes a convenient means for telling time, but also aconspicufor advertisements. As illustrated in 1, the casing (indicatedat X)v is supporte above a door by a bracket Y. The shadow-clock is thuscast upon the sidewalk in front of the door at Z, where it may be seenand the advertisement read by passers-b It 5will be apparent that thefeature of the multiple dial may be dis ensed with, and in Fig. 8 of thedrawings I ave shown a more Simple and compact arrangement of myapparatus, which 1s adapted for domestic use or as a night-clock, theshadow being cast y* upon the wall of a receiving-screen. `Here thepartition 11 isomitted, and the trans arent panel 12 `furnishes asupport for the c ara'cters, and therefore constitutes the dial, as wellas receives the s indle 13. The strikingtrain is absent, and or thespur-gears 17 and 18,`driven by the oing-train, are substitutedbevel-gears 38 and 39, which mesh with liketoothed rims 40 upon theperipheriesof the members 14 and 15.- Otherwise the apparatus may be ina eneral Way similar to that previously descriIJed and used in the samemanner, save that it willusually be convenient to maintain thelamp-circuit normally open and provideal switch by which it maybe closedto allow an observation of the time.

,on sai member of the going-train, an intermediate leveroperativelyrelated to the afore-` said levers, condensing and projectinlenses, a source of light, trans arent time-in icating meansintermediate o said lenses and actuated by the going-train, and aamel-carrier operatlng between the lenses an operated atVx intervals bythe second-named train.

2. In an apparatus of the class described condensing and projectinglenses, a source oi l light, aotary toothed panel-carrier equipped ityof transparent panels and ar" with a plura ranged to (present saidpanels vsuccessivey between sai lenses, transparent time-in icatingdisks operating between the lenses, a going-train adapted to operatesaid disks, said traint including a member provided with studs, an orating-lever actuated by said studs, anot er tram geared to th'e toothedpanel-carrier, said last-mentioned tram 1ncluding a locking-disk and afly, a locking-lever havin two members arranged to e respective withsaid locking-disk an t e fly of the fast-mentioned train, and a leverintermediate of the operating and locking levers for releasing the trainto operate the panel-carrier at intervals.

In testimony whereof I have signed myname to this. specification in thepresence of two 'subscribing witnesses.

I l aleman Bmraotolaw smal Witnesses:.

F. C. BEACH, JNO. M. Rrrrna.

